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## org.mule.transport.jms
Class DefaultJmsTopicResolver

    java.lang.Object
      org.mule.transport.jms.DefaultJmsTopicResolver

All Implemented Interfaces:
  JmsTopicResolver

Direct Known Subclasses:
  WeblogicJmsTopicResolver

    public class DefaultJmsTopicResolver

extends Object
implements JmsTopicResolver

A default implementation of the resolver uses endpoint's resource info and Java's `instanceof` operator to detect JMS topics.

Field Summary
`protected static Log` | `logger` logger used by this class

Constructor Summary
`DefaultJmsTopicResolver(JmsConnector connector)` Create an instance of the resolver.

Method Summary
`protected void` | `checkInvariants(Destination destination)` Perform some sanity checks, will complain in the log.
`JmsConnector` | `getConnector()` Getter for property 'connector'.
`boolean` | `isTopic(Destination destination)` Will use an `instanceof` operator.
`boolean` | `isTopic(ImmutableEndpoint endpoint)` Will use endpoint's resource info to detect a topic, as in `jms://topic:trade.PriceUpdatesTopic`.
`boolean` | `isTopic(ImmutableEndpoint endpoint, boolean fallbackToEndpointProperties)` Use endpoint configuration to detect a topic.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### logger

    protected static final Log logger

  logger used by this class

Constructor Detail

### DefaultJmsTopicResolver

    public DefaultJmsTopicResolver(JmsConnector connector)

  Create an instance of the resolver.

  Parameters:
    `connector` - owning connector

Method Detail

### getConnector

    public JmsConnector getConnector()

  Getter for property 'connector'.

  Returns:
    Value for property 'connector'.

### isTopic

    public boolean isTopic(ImmutableEndpoint endpoint)

  Will use endpoint's resource info to detect a topic, as in `jms://topic:trade.PriceUpdatesTopic`. This method will call `isTopic(org.mule.api.endpoint.ImmutableEndpoint, boolean)` with fallback flag set to true.

  NOTE: When using topics, use the '.' (dot) symbol for subcontext separation, as opposed to '/'. Otherwise the resource info may not get properly translated for the topic endpoint due to the way URI's are parsed.

  Specified by:
    `isTopic` in interface `JmsTopicResolver`
  Parameters:
    `endpoint` - endpoint to test
  Returns:
    true if the endpoint has a topic configuration
  See Also:
    `isTopic(org.mule.api.endpoint.ImmutableEndpoint, boolean)`

### isTopic

    public boolean isTopic(ImmutableEndpoint endpoint,
                           boolean fallbackToEndpointProperties)

  Use endpoint configuration to detect a topic. Additionally, specify a fallback mechanism to search in endpoint's properties in case resource info yields `false`. In case resource info returned `true` no endpoint properties would be consulted.

  Specified by:
    `isTopic` in interface `JmsTopicResolver`
  Parameters:
    `endpoint` - endpoint to test
    `fallbackToEndpointProperties` - whether to check endpoint's properties if resource info returned false
  Returns:
    true if endpoint's config tells it's a topic

### isTopic

    public boolean isTopic(Destination destination)

  Will use an `instanceof` operator. Keep in mind that may fail for JMS systems implementing both a `javax.jms.Topic` and `javax.jms.Queue` in a single destination class implementation.

  Specified by:
    `isTopic` in interface `JmsTopicResolver`
  Parameters:
    `destination` - a jms destination to test
  Returns:
    `true` if the destination is a topic

### checkInvariants

    protected void checkInvariants(Destination destination)

  Perform some sanity checks, will complain in the log.

  Parameters:
    `destination` - destination to test

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